Circulatory system grade 10

Function of the circulatory system

To transport substances in the body

Plasma

Liquid part of the blood

Red blood cells

Takes up oxygen in the lings and delivers it to the cells through the body

White blood cells

Fights infections

Platelets

Forms blood clots

Arteries

Carries blood away from the heart

Right ventricle

Pumps blood into the lungs

Left ventricle

Pumps blood to the aorta

Veins

Carries blood back to the heart

Valves

Lets something in and keeps it there by closing

Ventricles

Two lower chambers that pumps blood out of the heart

Heart

Size of a fist. Divided into 4 chambers

Atrium

Blood enters

Oxygenated blood

Left. Full of oxygen=from lungs

Deoxygenated blood

Right. Full of Carbon dioxide=came from body cells

Where do veins return blood

To the atrium

Where do blood leave

Arteries

Aorta

Largest artery. Receives blood from left artery

Capillaries

Exchange of blood and the body cells

Hemoglobin

Makes up most of the red blood cells

Pace maker

Located in the right atrium. Regulates the heart rate

Septum

Separates left and right

Superior vena cava

Carries blood to the upper body

Inferior vena cava

Carries blood to the lower body

function of the pulmonary vein

large blood vessels that receive oxygenated blood from the lungs and drain into the left atrium of the heart.

function of the pulmonary artery

pulmonary artery is the vessel transporting de-oxygenated blood from the right ventricle to the lungs.